The report shows which ISPs in your local area can support HD video streaming without buffering and which ones force you to sit in the low res jungle of 360p (or worse – 240p).

Some ISPs will also be given ‘HD Verified’ status, which shows that they were able to successfully deliver more than 90% of their HD streams over the last 30 days.

The report is based on data directly from YouTube’s servers, which can automatically lower your video quality if your connection is not fast enough. If one ISP in an area can deliver HD video while the other can only handle SD, then it’s clear the second ISP is doing something wrong, and that will be reflected in the report. Also, by showing the performance of other ISPs in your area, it makes it easier to know which ISP to switch to.

The report is similar to Netflix’s Speed Index, which has ranked ISPs based on their average speed since March 2013.